EasyTouch® PL4/PSL4 IntelliChlor® Surge Board

The Pentair 521218 is a specialized Load Center Surge Board designed to provide critical electrical protection for pool automation systems. Specifically engineered for use with the IntelliChlor Salt Chlorine Generator (SCG), this printed circuit board assembly (PCBA) acts as a frontline defense against voltage spikes, lightning transients, and power surges that can compromise expensive equipment. It features a compact, plug-and-play design that installs directly into the low-voltage compartment of a power center. By isolating the salt chlorinator’s communication and power lines, the 521218 ensures that the main system controller remains shielded from electrical noise and interference, maintaining consistent water chemistry and system longevity.